assertSame(updateLabelJob, returnedJob); // Method chaining
        assertEquals(queryBuilder, updateLabelJob.queryBuilder);
    }

    // Test query() method with null
    @Test
    public void test_query_withNull() {
        updateLabelJob.query(null);

        // queryBuilder field is protected, we can't directly access it
        // But we can verify the job still executes properly